This is the best Ruby (programming language) book that I've found.
Written in the style of "The Little Lisper", it's example oriented, and has a conversational style throughout.
OcrABBYY FineReader 8.0
RightsThis book used to be available for free from visibleworkings.com , but that site has since disappeared. I know of no way to get in touch with the author, and I assume that I'm not stepping on toes here.